Remove smoke decarators from some barbican tests.

Change-Id: I93d6f03b8b17b19b79273dfd58914624ef929e0c
Closes-Bug: PROD-19876
diff --git a/barbican_tempest_plugin/tests/scenario/test_image_signing.py b/barbican_tempest_plugin/tests/scenario/test_image_signing.py
index ef8d1b7..d641f28 100644
--- a/barbican_tempest_plugin/tests/scenario/test_image_signing.py
+++ b/barbican_tempest_plugin/tests/scenario/test_image_signing.py
@@ -26,7 +26,6 @@
 
 class ImageSigningTest(barbican_manager.BarbicanScenarioTest):
 
-    @decorators.attr(type='smoke')
     @decorators.idempotent_id('4343df3c-5553-40ea-8705-0cce73b297a9')
     @utils.services('compute', 'image')
     def test_signed_image_upload_and_boot(self):
@@ -49,7 +48,6 @@
                                       wait_until='ACTIVE')
         self.servers_client.delete_server(instance['id'])
 
-    @decorators.attr(type='smoke')
     @decorators.idempotent_id('74f022d6-a6ef-4458-96b7-541deadacf99')
     @utils.services('compute', 'image')
     def test_signed_image_upload_boot_failure(self):